6

FN8201.0

April 18, 2005

Figure 6. Instruction Set

Read Wiper Counter Register (WCR) or Analog Control Register (ACR)

P1 P0: 00 - WCR0, 01 - WCR1

P1 P0: 10 - ACR0, 11 - ACR1

Write Wiper Counter Register (WCR) or Analog Control Register (ACR)

P1 P0: 00 - WCR0, 01 - WCR1

P1 P0: 10 - ACR0, 11 - ACR1

Read Data Register (DR)

R1 R0: 00 - R0, 10 - R1

01 - R2, 11 - R3

Definitions:

SACK – Slave acknowledge, MACK – Master acknowledge, I/O – Increment/Decrement (I/O), R – Register,

P – Potentiometer

S

T

A

R

T

device type

identifier

device

addresses

S

A

C

K

instruction

opcode

WCR/ACR

addresses

S

A

C

K

register data

(sent by slave on SDA)

M

A

C

K

S

T

O

P

01

01

A

3

A

2

A

1

A

0

100

100

P

1

P

0

00

D

5

D

4

D

3

D

2

D

1

D

0

S

T

A

R

T

device type

identifier

device

addresses

S

A

C

K

instruction

opcode

WCR/ACR

addresses

S

A

C

K

register data

(sent by master on SDA)

S

A

C

K

S

T

O

P

01

01

A

3

A

2

A

1

A

0

101

000

P

1

P

0

00

D

5

D

4

D

3

D

2

D

1

D

0

S

T

A

R

T

device type

identifier

device

addresses

S

A

C

K

instruction

opcode

WCR/ACR/DR

addresses

S

A

C

K

register data

(sent by master on SDA)

M

A

C

K

S

T

O

P

0101

A

3

A

2

A

1

A

0

1 011

R

1

R

0

P

1

P

0

00

D

5

D

4

D

3

D

2

D

1

D

0

X9448